Hongli Lai is a CTO, consultant and entrepreneur. On his website he blogs about coding, company building and other advice.
Visit joyfulbikeshedding.com → RSS feedOn Hacker News Feb 2019 – Mar 2019
Systems & Performance 1Software Engineering 1Programming Languages 1Infrastructure & DevOps 1
Ruby apps can use a lot of memory. But why? Various people in the community attribute it to memory fragmentation, and provide two “hacky” solutions. Dissatisfied by the current explanations and provided solutions, I set out on a journey to discover the deeper truth and to find better solutions.
How do you debug an application, library or an entire system with multiple processes? One answer: tracing. An introduction into bpftrace, and an overview of the Linux tracing ecosystem (DTrace, eBPF, uprobes, etc).